package com.wc2;

import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Reducer;

import java.io.IOException;
import java.util.Iterator;

public class NewCombiner extends Reducer<Text, IntWritable, Text, IntWritable> {

    private IntWritable result = new IntWritable();

    @Override
    protected void reduce(Text key, Iterable<IntWritable> values, Reducer<Text, IntWritable, Text, IntWritable>.Context context) throws IOException, InterruptedException {
        Iterator<IntWritable> iterator = values.iterator();

        int num = 0;
        while (iterator.hasNext()) {
            IntWritable val = iterator.next();
            num += val.get();
        }
        result.set(num);
        context.write(key, result);
    }
}
